34729157172 has 24 divisors (see below), whose sum is σ = 81038688192. Its totient is φ = 11575816000.

The previous prime is 34729157137. The next prime is 34729157173. The reversal of 34729157172 is 27175192743.

It is a super-2 number, since 2×34729157172² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34729157173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235672 + ... + 353552.

It is an arithmetic number, because the mean of its divisors is an integer number (3376612008).

Almost surely, 2^34729157172 is an apocalyptic number.

It is an amenable number.

34729157172 is an abundant number, since it is smaller than the sum of its proper divisors (46309531020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34729157172 is a wasteful number, since it uses less digits than its factorization.

34729157172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142439 (or 142437 counting only the distinct ones).

The product of its digits is 740880, while the sum is 48.

The spelling of 34729157172 in words is "thirty-four billion, seven hundred twenty-nine million, one hundred fifty-seven thousand, one hundred seventy-two".